Railway gate



N. H MAI-.ljlEslAN RAILWAY GATE Filed Mrch 22. 1923 z sheet'sshee'pl @lf/toma o MIM, o NM o NN QN wm um Mm ww o m QM) w uhmm) mm, o .NJ m www ww m, o ,JNW o* o Bec. 30. 1924.v

Dec, 3U. 1924. 1,52L37 N. H. MAHTESIAN RAILWAY GATE Filed March 22. 192s' 2 sheets-sheetv 2 NEBSES HAVBGUTIN MLHTES 21d', 53F lNTERTGVJN, NEVI YORK.

RAILWAY GATE.

Application 'filed March 22, 1

Railway Gates; and he does hereby declare,

y the following to be a full, clear, and exact description of the invention, such as will enable others skilled 1n the art to which it appert'ains to make and use the same, reference being had to the accompanying draw-` ings, and to the letters andligures of reference marked thereon, which form a part of this specification.

This invention relates to railway gates and has for an object to provide a new and improved type of gate, automatically operated from the closing of electric circuits by the passing of trains. Y

A further object of the invention is to provide Vgates for roadways Aor the like adapted to swing or4 otherwise close over the passage of roadways across railway tracks, with improved mechanical means for actuating said gates and with train operated electrical means for actuating said mechanisms.

With these and other objects in view, the invention comprises certain novel elements, parts, units, combinations, mechanical movements, functions and interactions as disclosed inthe drawings, together with Vmechanical equivalents lthereof as will be hereinafter claimed. In the drawings:

Figure 1 is a top plan view of the device, certain parts being broken away for showing underlying parts;

Figure 2 is a view of the structure in side elevation;

Figure 3 is an enlarged detail view, partly in plan and partly in section, of the transmission mechanism;

Figure. Liis a view inside elevation of the momentum operated release mechanism.

Figures', 6 and 7 are diagrammatic representations vof the several movements of the release.

Figure Sis a perspectiveiview of the lever part ofthe release mechanism.

Like characters of reference indicate corresponding kparts throughout the several views. Y

The improved gate mechanism which more fully described and Serial No. 626,880.

forms the subject-matter of this application is adapted to close passageways across railway racks, whether such passageways are roadways or other railroad tracks, but having special reference to the closing of highway crossing. rihe device is intended to he mounted in a pit beneath the level of the railway ti ck, such track being represented by the d' 'rannnatic rails, l0.

In the ne *sary pit or other depression, a base, 11, is provided, supporting the structure, consisting in partof an electric motor, l2. At any convenient point along the rails, 10, train operated switches 13 and l-lv are installed with source of electrical energy, 15, in circuit therewith. A s there are now known many types of train operated switches which will perform the function required in the present case, no attempt has been made to -show any specific form of switch, but to represent the switch only diagrammatically.

rlhe armature of the motor connects directlywithstnb shaft, 16, rigidly connected with a cross head, 17, rotating with said armature within a drum, 18.

ldivoted to the cross head, 17, are friction clutch members, 19, adapted under the centrifugal action of the rotation of the cross l head to expand into frictional engagement with the interior of the drum, 18.

liounted slidably and rotatively upon the shaft, 16, is also va sleeve, 20, to which sleeve the extremities of the friction clutch members, 19, are connected by flexible links,or the like, 21. it will be obvious, especially from an examination of Figure 2, that as the clutch members 19 expand under centrifugal action the flexible connections 21 will tend to rotate the sleeve, 2O in advance of its normal rotation with the shaft, 16.

The sleeve, 20, vis provided with a cam notch, 22, and a pin, 23 is mounted upon the shaft 16, so that the augmented rotary action of the sleeve, 20, in the direction in- Y will tend I with a spring, V29, tending; to hold said integral device/With the ai'ni, 2S, at its limit oi Vmovement adjacent the plane oi? the Y drum, 18.

The drum, 18,V is rigidly connected With a shaft-,30, which carries a worin, 31, intergeared with a worin-near. rigidly mount- Y c n y ed upon the sha it, 83. VVThe shait, o3, is Viour'iialed in any approved partei' the structure, as indicated 34,:and carries a worin,

35, in tergreared 'with the Worm. gear, B6.

This gear, 36, i Y upon the shait 48, perforated and vided at opposite ends Wit i' -ivitli a plurality coincides with the circle upon Which Ythe ivh en released.

1 head, 48. tionoit the cam surfaces @the plunger from s looselyl mounted to rotate 37, journaled in aiiyapproved manner, as at 38, and is provided Voit sockets, 39, in its tace or, as. shown more particularly at Figure 3, in a. plate` 40, rigidly'secured to the near by means o'tscrews, 41. Y

The'shaft, 37, Ycarries Va crank arni, 42, ivith'a hollow Wrist pin, 43, the axis of Which sockets, 39, are termed.

ldithin the, hollow Wrist pin, 43, a plunger,44, isV mounted (see Figure 3) ivitli aV spring,f45, engaging a head, 4G, an "extremity, 47, being provided properlypifo` portioned and positioned to enter onev oi the sockets, 39, under the action of the spi-ine provided WithV aV head, sliding' upon a pin,' 49, rigidly secured to thelivijist pin, 43, Which prevents rotation Voi vsaid head. Y-

Adjacent Vto the normal position of this head. 48, a rocker arm. 50. is mounted upon a shai't, 51, joiirnaied iii any approved inaniieigasfat 52; The rocker The plunger. ,44. isV

h cams, 53. positioned to engage the cam surface, 54, oi' the As shown at Figure 5, the rela- 53 and 54i's such that the' plunger 44 has beenivithdraivn to the position shown at Figure 3. disengaging' en Qagfeinent with sock-` ets. 39.

7h en4 the extremity ot the rockerarin. 50, is lifted to the position shown at Figure G, it permits the spring, 45,l to throiv the "plunger extremity, 47, into engagement With thegear. 36. or pla-te, 40, and to engage any 1 one vot the sockets,39. presenting' .itself t'or limited by a j nig a deten 'such purpose.V For rocking` therocker arm to produce this result, a finger, 55. is rigidlv secured to the shaft. 51.. ivith means. as the spring., 56,1101' holding' the rocker Aarm in normal position.l such normal position being pin, 57. L' YPreferably as an inten-rai part oi the bellcrank lever, 26, an arm. 58, is provided havt, 59, pivoted thereto' at GOv andv heldyieldingly b v av spring, 61. Thedeteut.

59, is proi ment of the sleeve, 20,

ded With a cam extremity, 62. so positioned and proportioned that when the bell-crank lever swings Linder themovethe camy extremity,

. means arm, 50, is iii-or 62. engages against theiiiger, 55and rocks the rocker, 50, soY that its' 'cam extremity, Y

53, rides up from the position shoivn at 141g;

ure 5 to the position shown at Figure 6, per.

Vinitting' the plunger,44, tolpass under theV extremity, as indicated at niigiire7-r- 'M For a returniiiffiven'ient, the detent,

bv reason ofthe'spring 6i` passing the iii'ie'ei' 5.51ivitliout acting. A

ivoted to the Wrist pin 4`i, is a connecting; rod, G3, which in nectcd with '-'i ,.i'ack, G4, nioiiiited1to'i'ecipiof cate in. any approvedWray@ formed iiase,11. Y

doiiri'ialed upoiiathe base 11,areshajtts, and {id interffearedwith; the Vrack,'(34, by

i i? pii'iions, 67 Vand 1 respectively, ".ilhe silatts 65 and 6 6 carry b sled irealrsrGQ and TO, intergeared withgears,7i landYQ, rigidi connected respectively With yield.'

verticai .and 74. To thje'shaitts, ,73 and@ are respectively connected g'iiteppanels, i

turnY s pivotailyconiii the and Wi, inteudecto spantiieinterval beA tween the shafts 73 and74, which Will normally loca highway, junction ivitii Va highivayi ted ijipoi'i opposite sidesjoi1 the the device is o erated con-*xi .Y

gt islrthe intentV toA provide these ,dates with signal Or dangerr` parts at `F igiire g, tha Vose position. T-his. oi assuming that iii. i Vand has ac ,iat'ed Ythe paitsby't ofthe iiiechanisii'i to suoli elo owl'edge oti any electrician to supply such a position. as kmay be.,

ed froin'Figures 1 and v.9J-and W ien leaving the blociga'train iii ythe direction indica-ted by the-` arroiv at Figure 1 Will close thev switch 13.V -1 The circuits connected withV this sivitchaiid with the niotor are no definite eiqilaiiation.V that theclosing ot this. s the motor, 12,: rotating therewith. the cross head of this cross head, 17, member 19` to expand Vinto enga-ging position the drinn, 1S, and to It Will Vbe obviousA Witch ivillY energize 17. Thelrotatiou Willcause the clutch "by centrifugal foi-fee the gear 36.v pin, the that the plunger, 44, is notin The expansion of the clutch ever` has rotated the of the rotation ofthe V.The crank arm, 52,'aiid Wrist parts in thi engagement,

sleeve` 2O.v in advance `shaft and has, there- With the interior oi f, thereby rotate 'the shaft, tlaiid, through the train-oi 'ivormsf 43, will not, hoivever, he rotated `vvith s position, torV the reason members). h oiv` v so slnplejas to reqiire.-

the shaft, 16, Y and tore, moved the sleeve longitudinally by reason of the cam action.V ,This movement et the sleeve, acting upon the lever shown at Figure 8, Will cause the cam extremity ot the detent, 59, to engage against the finger,

55, to. rack the rocker, 50, from the position shown at Figure 5v to the position shown at Figure 6 and the spring, 45, will throw the plunger', 44, from the position shown at those figures to the position shown at Figure 7. rlhis throws the extremity, et?, into position to engage any one of the sockets, 39, as the gear, 36, rotates. The engagement being eiiected, the crank arm, 42, and wrist pin, L13, will rotate. This willV cause the rack, 64I, to be moved longitudinally trom the position shown vat Figures 1 and 2 towards the gear mechanism. Then the wrist pin has made one half a revolution to retract the rack to the limit of its movement, the head, 4S., 'of the plunger, 4A, will engage the cam, 53, upon the opposite end ot' the rocker, 50, and will be withdrawn trom engagement with the sockets, 39, whereby the rack will immediately come to rest and the gear mechanism may continue to operate so long as its momentum may impel, or the current continue to be supplied from any source.

With the gates thus opened by the reciprocation of the rack, 64, the wrist pin, #13, will assume a position opposite to that shown at Figures l, 2 and 3, and this position may, perhaps, be considered the normal posit-ion, as the gates in open position no doubt would be considered normal. `With a train entering the block, however, either one ot the switches, 13 or 14, being closed, the motor is again energized and the action of all the parts is repeated identically the same, with the exception of the movement of the rack in the opposite direction, closing the gates. It will be obvious, theretore, that the rota-tion of the motor and all its intergeared and Vrelated parts is always in the same direction and that the reciprocating movement of the rack is interrupted at its limits by the interposition ot the rocker arm, 50, retaining thereby the gates in their' open or closed position as they assume by such-movement to remain in such position until the mechanism is again energized from closing either the switch 13 or 14 by the assing of the train over or in contact witi said switches.

The utility of the connection effected by the plunger, 44, will be apparent in that it permits the overcoming of the inertia of the parts trom the motor before the resistance of operating the gates is thrown onto said mechanism. l It is also true in regardto the clutch members, 19, which are held normally out of clutching engagement with the drum, 20, until the motor has started and attained suiicient speed to throw said clutch members by centrifugal action outwardly into engagement making such engagement gradually, as in the case 1of friction clutches, starting the mechanism and overcoming the inertia of the gearing before the wrist pin, a3, is connected with the gear, 36, or plate, 4:0, whereby the device may be operated with a smaller motor and a less consumption et current than where the initial torque ot the motor is directly upon the mechanism, actuating all of the structure, including'the swinging orP the gates.

lfhile the gates have been shown as mounted upon the vertical shafts and swinging in horizontal planes, it is obvious that the rack, Grt, may be employed to operate other mechanical devices than the vertical Vshatts and horizontally swinging gates, and

that in .positions where gates otherwise operated are necessary, desirable or preferable, the reciprocating motion of the rack, (ist. may be translated into other mechanical nairen'ients than those specifically shown in the Y drawings.

N hat I claim to be new is:

1. The combination with movable gates oi a reciprocating rack, a crank arm connected with the rack, a train ot gearing, means io at times connect the crank arm with the train of gearing, a motor, a friction clutch interposed between the motor and the gearing, means actuated by the mechanism ot the motor tor actuating the friction clutch. means actuated from the friction clutch to engage the crank arm with the train o'l' gearing.

Q. The combination with movable gates ot a reciprocating rack positioned to actuate vsaid gates, a crank arm, means connect.- :ing the crank arm with the rack, a gear rotating concentrically with the crank arm. means to at times connect the crank arm with the gear, a train ot gears intergeared with said urn, actuating gear and motor, a centrifugal clutch operated by the motor and adapted to operate the train ot gears. and means operated by the centrifugal clutch for initiating connection between the crank arm and its gear.

3. rEhe combination with movable gates ot a reciprocating rack connected therewith, a crank arm, a connecting rod extending from the crank arm to the rack, a spring pressed plunger carried by the crank arm. a gear rotating concentrically with the crank arni and provided with sockets tor receiving the plunger, a train of gears operating said crank arm gear, a motor, a clutch interposed between the motor and the train oiY gears, a trigger positioned to withdraw the plunger t'rom connecting the crank arm with its gear, and means operated by the clutch 'for throwing the trigger to releasing position.

et. The combination with movable gates ol' a reciprocating rack adapted to actuate said gates, a crank arm, a hollow wrist pin carried by the crank arm, a connecting rod connecting the wrist pin with the rack, a plunger mounted to reciprocate within the hollow Htl l' Wrist pin, a spring positioned to yielding-v against the tension. of the spring at dia- -metrically opposite points in the movement of the crank arm delining the limits of movement of the rack, a motor, a clutch convnectedrwitli the motor, means intergearing the'clutch with the crank arm operating gear,and means actuated by the clutch vto release the trigger at a properly'timed interi val following the starting of the motor.

. 5. The combination With movable gates Vby the motor and adapted tto actuate the gate operating mechanism, a sleeve mounted to slide upon the motor shaft, means actuated by the clutch to rotate the sleeve relative' to the motor shaft, a cam tending to move the sleeve longitudinally upon the shaitV when rotated relative thereto andmeans actuated slidlng of the-sleeve tor releasing the trigger.

In testimony Vwhereof he hereunto l alii .vies4V his signature. Y Y Y NERSES HAROUTIN MAHTESIAN. 

